title: A review on applicability of naturally available adsorbents for the removal of hazardous dyes from aqueous waste.
abstract: The effluent water of many industries, such as textiles, leather, paper, printing, cosmetics, etc., contains large amount of hazardous dyes. There is huge number of treatment processes as well as adsorbent which are available for the processing of this effluent water-containing dye content. The applicability of naturally available low cast and eco-friendly adsorbents, for the removal of hazardous dyes from aqueous waste by adsorption treatment, has been reviewed. In this review paper, we have provided a compiled list of low-cost, easily available, safe to handle, and easy-to-dispose-off adsorbents. These adsorbents have been classified into five different categories on the basis of their state of availability: (1) waste materials from agriculture and industry, (2) fruit waste, (3) plant waste, (4) natural inorganic materials, and (5) bioadsorbents. Some of the treated adsorbents have shown good adsorption capacities for methylene blue, congo red, crystal violet, rhodamine B, basic red, etc., but this adsorption process is highly pH dependent, and the pH of the medium plays an important role in the treatment process. Thus, in this review paper, we have made some efforts to discuss the role of pH in the treatment of wastewater.
authors.affiliation: Department of Chemistry, Lovely School of Sciences, Lovely Professional University, Phagwara, 144402 Punjab, India. sharmapankaj47@yahoo.com
authors.forename: Pankaj
authors.initials: P
authors.lastname: Sharma
authors.forename: Harleen
authors.initials: H
authors.lastname: Kaur
authors.forename: Monika
authors.initials: M
authors.lastname: Sharma
authors.forename: Vishal
authors.initials: V
authors.lastname: Sahore
mesh_terms: D000327:Adsorption; D004396:Coloring Agents / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D004396:Coloring Agents; D014874:Water Pollutants, Chemical